harrison



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C. HARRISON. ROTARYSTEAM ENGINE.

10.79.8223. Patented July 14, 1868.. Y

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GALEB HARRISON; OF MILWAUKEE, WISCONSIN'.

Letters PatentNo. 79,828, dated July 14, 1868; antedated .TuneA 27, 1868.

IMPROVEMENT IN ROTARY STEAM-ENGINES.

T0 ALL AWHOM IT MAY CONCERN:

Be it known that I, CALEB HARRISON, of the city' and county f 'Miliyaukem and Stateof Wisconsin, have' invented a new and useful Improvement in Rotary Steam-Enginesg'anldilf'do hereby declarethfat the following is a full, clear, and exact description thereof, which will enable thoseislfilled in the art to make and use the same, reference being had to the accompanying drawings, forming par/c of this specification, in which- Figure'l is a perspective view. 1 f

Figure 2, side view with top of wheel-case removed. u

Figure 3, end view with-top of wheel-case removed. i H,

Figure 4, top view with top of wheel-case removed.

Figure 5, sectional view of toothed wheel, wheel-case, and valve. i

Figure 6, top of wheel-case. 1 f:-`

Figure 7, valve.. atwise.

Figure 8, valve, edg'ewise.

-'Figures 9 and 10, crossscctions of valve. t i l Similar letters of reference in each of the figures indicate corresponding parts.. A The object of my invention is to apply steamfrom a high pressure upon teeth in 4close connection with steam-ports, giving actionor reaction, as desired; and this I do by applying the steam against teeth on the periphery of a wheel, as shown in the accompanying drawings, or by making teeth on the inside ofthe wheel-` curb, and having the steam issue from the periphery ofthe wheel against the teeth. Y'

i A, frame; B, wheel with teeth on its periphery;V C, case in which wheel B revolves; D, main, driving-shaft, with perpetual serewt'E, line-shaft, from which power is to be taken; F, pitched tooth-wheel', operated hy perpetual screw on main shaft, to reduce velocity; G, pulley on line-shaft;4 H, valve;` I, starting-bar; K, steampipe; L L, steam-ports; M, exhaust-pipe; N N, turned rings, bolted on to the sides ofthe wheel B, just large en'ough to come Hush with the points ofthe teeth.

Operation. Steam is admitted to the wheelB .by turning the valve H, so that it may pass through either port L, according to the direction it is .desired to have the wheel revolve. The teeth' and the rings N N, on the periphery of the wheel, come close t'o the openings of the ports in the curb C for about the distance the teeth are apart, but not close` enough for them to wear on the curb. `The steam issuing from the port comes in contact with thel teeth, and by the velocity or force with which it strikes them, moves the wheelV B, turning the shaft D with great velocity, much greater than is practicable to use direct. The perpetual screw P on this shaft turns the wheel F and shaft E at a greatly reduced motion', thuslconverting rapidity of motion into power.

To revolve wheel B in an opposite direction,A close that port L and open the other, and a reverse motion is obtained. Y

What I claim as my invention, and desire to secure by Letters Patent, is-

An engine, consisting of the serrated disk B, mounted in a case provided with the two steam-passages L L,

, and valve H, arid having the shaft D, provided with the endlesss'crew P, engaging in the wheel F, all constructed and arranged to operate as shown and described.

CALEB HARRISON.

Witnesses:

J. B. SMITH, JN0. A.. SEeAn. 

